Automatic stoker.



PATENTED JUNE 27, 1905.

G. ATWELL.

AUTOMATIC STOKBR.

APPLICATION FILED MAY 31, 1904.

2 SHEETS-SHEET 1.

W|TNE55E5+ INVENTOR ma/mw gzhw @120 -L w zw i w w No. 793,040. PATBNTEDJUNE 27, 1905.

G. ATWELL.

AUTOMATIC STOKER.

APPLIOATION FILED MAY 31,1904.

2 SHEETS-SHEET 2 Fi s.

WITNESSES-.4

I NVENTOR+ UNITED STATES Patented June 27, 1905.

PATENT OFFICE.

GEORGE ATIVELL, OF GLFNCOE, MISSOURI, ASSIHNOR OF ONE-HALF TO CIIARIJIGS\V. CORR, OF ST. LOUIS, MISSOURI.

AUTOMATIC STOKER.

SPECIFICATION forming part of Letters Patent No. 793,040, dated June 27,1905.

Application filed May 31, 1904. Serial No. 210,371.

To all 1r]; om it may ('Ulblilllb:

Be it known that I, GEORGE ATwELL, a citizen of the United States,residing at Glencoe, St. IJOIIIS county, State of Missouri, haveinvented certain new and useful Improvements in Automatic Stoker's, ofwhich the following is a specification containing a full, clear, andexact description, reference being had to the accompanying drawings,forming a part hereof.

My invention relates to improvements in automatic stokers; and itconsists of the novel features herein shown, described, and claimed.

In the drawings, Figure 1 is a vertical central section on the lines 1 1of Figs. 2 and 3. Fig. 2 is a horizontal section on the line 2 2 of Fig.I and looking downwardly. Fig. 3 is a front elevation as seen looking inthe direc tion indicated by the arrow 3 in Fig. 1. Fig. -t is a plan ofthe stoking-wheel.

Referring to the drawings in detail, a rec tangular horizontal openingis formed a short distance above the (hair-opening 5 in thefurnace-wall. 6, the outer face of the wall 6 being covered with a metalplate 7, and the stoking wheel casing is attached to this metal plate,and this casing comprises the bottom plate 8, having the central bearing2) in its upper face, the top plate 10, and the wall 11, ex tendingdownwardly from the top plate and connected to the bottom plate. Thestokingwheel 12 has a stub-shaft 18 mounted in the bearing 5), andsemicircular flanges 14 extend upwardly from the face of the wheel. Ashaft 15 extends downwardly through the plate 10 and through the bearing16 and is connected to the stoking-wheel 12 by the set screw 17.

The driving-shaft 18 is mounted in bearings 19 and 20, said bearingsbeing connected to the casing by brackets 21 and 22, and a Navel-gear 23upon the shaft 18 meshes with the bevelgear 24: upon the shaft 15, saidshaft 18 being driven by the belt-pulleys Brackets 26 and 27 extendupwardly from the casing and theninwardly to support the bearing 28,said bearing 28 supporting the upper end of the shaft 15. Aconveyertrough 29 is horizontally mounted above the casing, and a screwconveyer 30 operates in this trough. Spouts 31, 32, and 33 lead from thetrough 22) through the plate IO-and discharge upon the stoking-wheel 12,the passages through said spouts being controlled by sliding valves 34.

Pulverized coal or similar fuel is fed to the trough 29 and fed to thespouts 31, 32, and 33 by the screwconveyor, and by these spouts the fuelis discharged upon the stoking-wheel 12. The flanges let upon thestoking-whecl are substantially in the form of semicircles, openingoutwardly, as shown in Fig. I, and when the fuel falls upon the wheel,which is rotated at a high rate of speed, it will be thrown through thewall 6 into the furnace. Assuming that the stoking-wheel is rotated withthe sun and at a high rate of speed, if the fuel is passing through thespent 33 it will be thrown toward the right-hand side of the furnace,and if it is passing through the spout 31 it will be thrown into thecenter of the furnace, and if it is passing through the spout 32 it willbe thrown to the left-hand side of the furnace, and by manipulating thevalves 31 the fuel may be thrown to any desired part of the furnace.

I claim 1. In an automatic stoker, the combination with a furnace wallhaving an inlet opening, of a casing secured to the furnace wall oversaid opening; a stoking wheel mounted to rotate in a horizontal planewithin the casing; and a plurality of spouts so located as to dischargeupon the stoking-wheel at different points in the path thereof;substantially as specified.

2. In an automatic stoker, the combination with a furnace wall having aninlet opening, of a casing secured to the furnace- 90 wall over saidopening; a stoklngwheel mounted to rotate in a horizontal plane withinthe casing; a plurality of spouts so located as to dischargeupon thestoking-wheel at different points in the path thereof; and means wherebythe passage of fuel through located adjacent the discharge ends of thespouts; substantially as specified.

In testimony whereof I have signed my name to this specification inpresence of two subscribing Witnesses.

GEORGE ATWELL.

Witnesses:

ALFRED A. EIoKs, M. M. BRAZILL.

